A nurse wants to teach about one of the primary organs responsible for heat production. Which organ should the nurse include?
a. Pancreas
b. Liver
c. Adrenal medulla
d. Heart
ANS: C
Thyroxine acts on the adrenal medulla, causing the release of epinephrine into the bloodstream. Epinephrine causes vasoconstriction that increases metabolic rates, thus increasing heat produc-tion. Heat production does not involve the pancreas, the liver, or the heart.
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